Environment, economy and eco-driving (Miljø og økonomisk kjøring)
Environment, economy and eco-driving (Miljø og økonomisk kjøring)
This domain tests fuel/energy-efficient driving without losing safety or schedule reliability.
Core technique
- Anticipate: look far ahead, release the accelerator early for a lower limit, junction or bus stop, and let the bus roll. Avoid late braking and rapid acceleration.
- Accelerate smoothly and use the highest safe gear. Keep engine speed low; use the retarder and engine brake for descents.
- Switch off the engine during longer stops, unless heating/cooling is required for passengers or the vehicle system demands it. Idling burns fuel and adds noise and emissions.
- Check tyre pressure monthly and before long trips; low pressure increases rolling resistance and heat. Remove unnecessary roof loads.
- Plan the route and passenger load. A well-maintained bus with clean filters and correct fluid levels uses less fuel. Electric and biogas buses need smooth regenerative braking and sensible pre-conditioning.
- Eco-driving typically cuts fuel use by 5–10% and reduces brake wear, noise and emissions.
Worked example
You are doing 80 km/h and see a 60 km/h sign 200 m ahead. Instead of holding 80 and braking at the sign, release the accelerator early, let the retarder/engine brake slow you smoothly, and arrive at 60 with the brakes cool. You save fuel, reduce brake wear and keep passengers comfortable.
Traps
Idling for long periods to keep warm; jackrabbit starts; late braking; incorrect tyre pressure; and using the retarder only on steep descents. Also do not sacrifice safety or rest breaks to chase fuel savings.